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Bug #41781 PHP loses the reference to the default parameter
Submitted: 2007-06-22 15:14 UTC Modified: 2007-06-25 17:48 UTC
From: skettler@php.net Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.3 OS: Linux 2.6.20.2 / Debian Sarge
Private report: No CVE-ID: None
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From: skettler@php.net
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 [2007-06-22 15:14 UTC] skettler@php.net 
Description:
------------
When using a pass by reference parameter with a default value, the scripting engine does not always remember that reference.

The script shows that

    ++$i;
    func($i);

and

    func(++$i);

are not equivalent at all times. When not using the default value and submitting an actual variable, both expressions are handled the same way.

Reproduce code:
---------------
See http://helplets.com/PHP/referencebug.txt

Expected result:
----------------
0123456
--------
0123456
--------
0123456


Actual result:
--------------
0123456
--------
01234545
--------
0123456

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 [2007-06-25 17:48 UTC] tony2001@php.net 
0123456
--------
0
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
1
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
2
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 20
3
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
4
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
5
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
4
Strict Standards: Only variables should be passed by reference in /tmp/3.php on line 26
5
--------
0123456
 
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